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Mean of seroneutralization titers detected at 7 and 14 dpi of Groups A and B against the A/swine/Spain/003/2010 H3N2 IV challenged virus. Grey bars refer to group A (unvaccinated group) and black bars depict group B (pCDNA3.1(+)-VC-4-flagellin vaccinated group). SN, seroneutralization. DPI, days post-inoculation. Error bars indicate the mean ± SEM.
